Why can’t coated gaskets be used for the standard 15CrMo gaskets in manholes?
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This post was last edited by zhangjuhua on 2022-12-11 03:26. As the title suggests, why can’t HGT20607-2009 PTFE-lined gaskets be used in place of the standard 15CrMo gaskets for manholes?
It can be covered with metal gaskets; looking below, you’ll find metal gaskets, metal wound gaskets, metal ring gaskets, and so on
15CrMo belongs to the category of high-temperature resistant low-alloy steels; such steel is used only at high temperatures, with high temperatures generally referring to levels above 300 or 400 degrees Celsius. Polytetrafluoroethylene can withstand temperatures up to 260 degrees, so there is a temperature difference between the two.